Patch "arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug" has been added to the 4.0-stable tree

Patch "arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arch-x86-kvm-mmu.c-work-around-gcc-4.4.4-bug.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5ec45a192fe6e287f0fc06d5ca4f3bd446d94803 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 10 Jun 2015 11:15:02 -0700
Subject: arch/x86/kvm/mmu.c: work around gcc-4.4.4 bug

From: Andrew Morton <akpm@linux-foundation.org>

commit 5ec45a192fe6e287f0fc06d5ca4f3bd446d94803 upstream.

Fix this compile issue with gcc-4.4.4:

   arch/x86/kvm/mmu.c: In function 'kvm_mmu_pte_write':
   arch/x86/kvm/mmu.c:4256: error: unknown field 'cr0_wp' specified in initializer
   arch/x86/kvm/mmu.c:4257: error: unknown field 'cr4_pae' specified in initializer
   arch/x86/kvm/mmu.c:4257: warning: excess elements in union initializer
   ...

gcc-4.4.4 (at least) has issues when using anonymous unions in
initializers.

Fixes: edc90b7dc4ceef6 ("KVM: MMU: fix SMAP virtualization")
Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Donald Parsons <dparsons@brightdsl.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kvm/mmu.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4215,13 +4215,13 @@ void kvm_mmu_pte_write(struct kvm_vcpu *
 	u64 entry, gentry, *spte;
 	int npte;
 	bool remote_flush, local_flush, zap_page;
-	union kvm_mmu_page_role mask = (union kvm_mmu_page_role) {
-		.cr0_wp = 1,
-		.cr4_pae = 1,
-		.nxe = 1,
-		.smep_andnot_wp = 1,
-		.smap_andnot_wp = 1,
-	};
+	union kvm_mmu_page_role mask = { };
+
+	mask.cr0_wp = 1;
+	mask.cr4_pae = 1;
+	mask.nxe = 1;
+	mask.smep_andnot_wp = 1;
+	mask.smap_andnot_wp = 1;
 
 	/*
 	 * If we don't have indirect shadow pages, it means no page is


Patches currently in stable-queue which might be from akpm@linux-foundation.org are

queue-4.0/arch-x86-kvm-mmu.c-work-around-gcc-4.4.4-bug.patch